Portability	Haskell 98
Stability	provisional
Maintainer	iavor.diatchki@gmail.com

Text.Show.Pretty

Description

Functions for human-readable derived Show instances.

Synopsis

Documentation

type Name = String Source

A name.

data Value Source

Generic Haskell values. NaN and Infinity are represented as constructors. The String in the literals is the text for the literals "as is".

Constructors

Con Name [Value]	Data constructor
Rec Name [(Name, Value)]	Record value
Tuple [Value]	Tuple
List [Value]	List
Neg Value	Negated value
Ratio Value Value	Rational
Integer String	Non-negative integer
Float String	Non-negative floating num.
Char String	Character
String String	String

Instances

Eq Value
Show Value

parseValue :: String -> Maybe Value Source

reify :: Show a => a -> Maybe Value Source

ppValue :: Value -> Doc Source

Pretty print a generic value. Our intention is that the result is equivalent to the Show instance for the original value, except possibly easier to understand by a human.

ppDoc :: Show a => a -> Doc Source

Try to show a value, prettily. If we do not understand the value, then we just use its standard Show instance.

ppShow :: Show a => a -> String Source

Convert a generic value into a pretty String, if possible.